[Omnioutliner 2](https://itunes.apple.com/us/app/omnioutliner-2/id704610906?mt=8&at=10l5TL) is now available in the app store.[^aff] You can read the [MacStories](http://www.macstories.net/reviews/omnioutliner-2-refined-for-ios-7-now-with-external-keyboard-support/) review if you need more details.
[^aff]: Affiliate Link (as is the post link.)